18716890

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{233}}^1\times {\mathrm{277}}^1$

素因数の和:546

約数の個数: 32

約数和(自身を含む): 35128080

約数和(自身を除く): 16411190

約数列:

[1, 2, 5, 10, 29, 58, 145, 233, 277, 290, 466, 554, 1165, 1385, 2330, 2770, 6757, 8033, 13514, 16066, 33785, 40165, 64541, 67570, 80330, 129082, 322705, 645410, 1871689, 3743378, 9358445, 18716890]

約数ペア:

[(1, 18716890), (2, 9358445), (5, 3743378), (10, 1871689), (29, 645410), (58, 322705), (145, 129082), (233, 80330), (277, 67570), (290, 64541), (466, 40165), (554, 33785), (1165, 16066), (1385, 13514), (2330, 8033), (2770, 6757)]